CN101034142B - Battery voltage measuring unit of storage battery group having accident safety function - Google Patents
Battery voltage measuring unit of storage battery group having accident safety function Download PDFInfo
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- CN101034142B CN101034142B CN2007100985554A CN200710098555A CN101034142B CN 101034142 B CN101034142 B CN 101034142B CN 2007100985554 A CN2007100985554 A CN 2007100985554A CN 200710098555 A CN200710098555 A CN 200710098555A CN 101034142 B CN101034142 B CN 101034142B
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Abstract
This invention relates to a galvanic battery voltage measurement module having accidents security function. The identity is in the circuit of measuring single battery voltage of galvanic battery by photoelectric relay, in the transient of single stability circuit, control photoelectric relay to connect the battery voltage measuring circuit to the storage battery in galvanic battery, in the steady-state of a single steady-state circuit, control photoelectric relay to make battery voltage measuring circuit and batteries in the battery group not connected. Thereby eliminate the potential of the battery voltage measuring circuit with a battery of multiple battery voltage connections when the microcontroller abnormal work, avoid the measured voltage over the scope of battery voltage measuring circuit to lead battery voltage measuring circuit overload in the long-term state of the situation.
Description
Technical field
The present invention relates to a kind of battery voltage measuring unit of storage battery group with accident safety function.
Background technology
Accumulator is a kind of battery that power supply is provided for consumer, because the single-unit battery tension is usually between 1.2 volts to 24 volts, in order to obtain higher voltage, then adopts a plurality of single-unit accumulators formation battery pack of connecting.Battery pack is in the long-term work process, because the performance difference between the different single batteries makes the performance that occurs the whole battery pack of part single battery performance decline influence in the battery pack.In order to ensure battery performance, need real-time online to detect and change the single-unit accumulator of performance decline; And real-time online detects single battery voltage, then is one of important measures of diagnosis cell performance.
Timesharing by a plurality of photoelectric relays of microprocessor controls is switched, and is one of common method of each single-unit battery tension of real time on-line monitoring battery pack.Shown in Figure 1 is that prior art utilizes photoelectric relay to measure the circuit theory of the voltage of accumulator battery set single accumulator.This method requires the same time can only allow to stipulate two photoelectric relay closures, makes the battery voltage measuring circuit connect the both positive and negative polarity of specifying the single-unit accumulator by the photoelectric relay of regulation.When the microcontroller operate as normal, microcontroller program is in accordance with regulations correctly controlled the photoelectric relay of regulation, makes battery voltage measuring circuit two ends connect the both positive and negative polarity of same single-unit accumulator measured in the battery pack.When if microcontroller is in the abnormal work state, the more piece battery tension with in the battery pack that the battery voltage measuring circuit might occur is connected, make tested voltage surpass the scope of battery voltage measuring circuit, cause the battery voltage measuring circuit to be in overload, if this overload retention time is oversize, will damage accumulator and battery voltage measuring circuit.
The objective of the invention is to overcome prior art when microcontroller is in the abnormal work state, the more piece battery tension with in the battery pack that the battery voltage measuring circuit might occur is connected, make tested voltage surpass the scope of battery voltage measuring circuit, cause the battery voltage measuring circuit to be in overload, if this overload retention time is oversize, with damaging the shortcoming of accumulator and battery voltage measuring circuit, a kind of new battery cell voltage measuring apparatus is proposed.
The technical solution used in the present invention is: increase time control circuit on the control circuit of existing photoelectric relay, make photoelectric relay can only be in conducting state at short notice, thereby when having eliminated the microcontroller abnormal work, the more piece battery tension with in the battery pack of the battery voltage measuring circuit that might occur is connected, make tested voltage surpass the scope of battery voltage measuring circuit, cause the battery voltage measuring circuit to be in the situation of long-term overload.
The present invention utilizes short characteristic of monostable circuit transient state process time under the cooperation of microcontroller, at the transient state of monostable circuit control photoelectric relay the battery voltage measuring circuit is connected with accumulator in the battery pack, at the Steady-State Control photoelectric relay of monostable circuit the battery voltage measuring circuit is not connected with accumulator in the battery pack, thereby when having eliminated the microcontroller abnormal work, the more piece battery tension with in the battery pack of the battery voltage measuring circuit that might occur is connected, make tested voltage surpass the scope of battery voltage measuring circuit, cause the battery voltage measuring circuit to be in the situation of long-term overload.
The present invention has inherited to have now and has utilized photoelectric relay to monitor the intrinsic characteristic of accumulator battery set single battery tension in real time, when having eliminated the microcontroller abnormal work, the more piece battery tension with in the battery pack of the battery voltage measuring circuit that might occur is connected, make tested voltage surpass the scope of battery voltage measuring circuit, cause the battery voltage measuring circuit to be in the situation of long-term overload.
Description of drawings
Fig. 1 prior art utilizes photoelectric relay to measure the circuit theory diagrams of the voltage of accumulator battery set single accumulator;
Fig. 2 is the circuit theory diagrams of the embodiment of the invention.
Embodiment
As shown in Figure 1, B11, B12, B13, B14, B15, B16, B17, B18, B19, B110, B111, B112, B113, B114 and B115 are the single-unit accumulators; U11, U12, U13, U13, U14, U15, U16, U17, U18 are photoelectric relays; U19, U110 are three or eight code translators.Wherein the positive pole of the B11 positive pole that is connected to negative pole, the B12 of the B12 positive pole that is connected to the negative pole of B13, the B13 positive pole that is connected to negative pole, the B15 of the B14 positive pole that is connected to the negative pole of B16, the B16 positive pole that is connected to negative pole, the B17 of the B17 positive pole that is connected to the negative pole of B18, the B18 positive pole that is connected to negative pole, the B19 of the B19 positive pole that is connected to the negative pole of B110, the B110 positive pole that is connected to negative pole, the B112 of the B112 positive pole that is connected to the negative pole of B113, B113 is connected to the negative pole of B114, the positive pole of B114 is connected to the negative pole of B15, thereby constitutes battery pack; 5 pin of U11 are connected to the negative pole of B11,8 pin are connected to the positive pole of B11,5 pin of U12 are connected to the negative pole of B13,8 pin are connected to the positive pole of B13,5 pin of U13 are connected to the negative pole of B15,8 pin are connected to the positive pole of B15,5 pin of U14 are connected to the negative pole of B17,8 pin are connected to the positive pole of B17,5 pin of U15 are connected to the negative pole of B19,8 pin are connected to the positive pole of B19,5 pin of U16 are connected to the negative pole of B111,8 pin are connected to the positive pole of B111,5 pin of U17 are connected to the negative pole of B113,8 pin are connected to the positive pole of B113,5 pin of U18 are connected to the negative pole of B115,8 pin are connected to the positive pole of B115,6 pin of U11,6 pin of U12,6 pin of U13,6 pin of U14,6 pin of U15,6 pin of U16, the connection one of 6 pin of U17 is connected to an end of resistance R 14,7 pin of U11,7 pin of U12,7 pin of U13,7 pin of U14,7 pin of U15,7 pin of U16, the connection one of 7 pin of U17 is connected to an end of resistance R 11, the other end of R11 links to each other with the other end of R14, constitute accumulator battery set single battery voltage measurement commutation circuit, signal 1-1 and 1-2 are the output of accumulator battery set single battery voltage measurement commutation circuit, can measure single-unit battery tension in the battery pack by signal 1-1 and 1-2.7 pin of U19 connect 2 pin of U18,9 pin of U19 connect 2 pin of U17,10 pin of U19 connect 2 pin of U16,11 pin of U19 connect 2 pin of U15,12 pin of U19 connect 2 pin of U14,13 pin of U19 connect 2 pin of U13,12 pin of U19 connect 2 pin of U11,15 pin of U19 connect 2 pin of U11,7 pin of U19 connect 4 pin of U18,9 pin of U19 connect 4 pin of U17,10 pin of U19 connect 4 pin of U16,11 pin of U19 connect 4 pin of U15,12 pin of U19 connect 4 pin of U14,13 pin of U19 connect 4 pin of U13,12 pin of U19 connect 4 pin of U11,15 pin of U19 connect 4 pin of U11, the end of R12 connects power supply VCC, the other end is connected to 3 pin of U18 simultaneously, 3 pin of U17,3 pin of U16,3 pin of U15,3 pin of U14,3 pin of U13,3 pin of U12 and 3 pin of U11, the end of R15 connects power supply VCC, the other end is connected to 1 pin of U18 simultaneously, 1 pin of U17,1 pin of U16,1 pin of U15,1 pin of U14,1 pin of U13,1 pin of U12 and 1 pin of U11 are formed the optical relay control circuit.5 pin of 5 pin of U19 and 4 pin ground connection, U110 and 4 pin ground connection, 6 pin of U19 and U110 meet power supply VCC, constitute the photoelectric relay control circuit.
In Fig. 2, B21, B22, B23, B24, B25, B26, B27, B28, B29, B210, B211, B212, B213, B214 and B215 are the single-unit accumulators; U21, U22, U23, U23, U24, U25, U26, U27, U28 are photoelectric relays; U211 is monostable integrated circuit 74HC221; U219, U210 are three or eight code translator 74HC138.Wherein the positive pole of B21 is connected to the negative pole of B22, the positive pole of B22 is connected to the negative pole of B23, the positive pole of B23 is connected to the negative pole of B24, the positive pole of B25 is connected to the negative pole of B26, the positive pole of B26 is connected to the negative pole of B27, the positive pole of B27 is connected to the negative pole of B28, the positive pole of B28 is connected to the negative pole of B29, the positive pole of B29 is connected to the negative pole of B210, the positive pole of B210 is connected to the negative pole of B212, the positive pole of B212 is connected to the negative pole of B213, the positive pole of B213 is connected to the negative pole of B214, the positive pole of B214 is connected to the negative pole of B25, thereby 5 pin that constitute battery pack U21 are connected to the negative pole of B21,8 pin are connected to the positive pole of B21,5 pin of U22 are connected to the negative pole of B23,8 pin are connected to the positive pole of B23,5 pin of U23 are connected to the negative pole of B25,8 pin are connected to the positive pole of B25,5 pin of U24 are connected to the negative pole of B27,8 pin are connected to the positive pole of B27,5 pin of U25 are connected to the negative pole of B29,8 pin are connected to the positive pole of B29,5 pin of U26 are connected to the negative pole of B211,8 pin are connected to the positive pole of B211,5 pin of U27 are connected to the negative pole of B213,8 pin are connected to the positive pole of B213,5 pin of U28 are connected to the negative pole of B215,8 pin are connected to the positive pole of B215,6 pin of U21,6 pin of U22,6 pin of U23,6 pin of U24,6 pin of U25,6 pin of U26, the connection one of 6 pin of U27 is connected to an end of resistance R 24,7 pin of U21,7 pin of U22,7 pin of U23,7 pin of U24,7 pin of U25,7 pin of U26, the connection one of 7 pin of U27 is connected to an end of resistance R 21, the other end of R21 links to each other with the other end of R24, constitute accumulator battery set single battery voltage measurement commutation circuit, signal 1-1 and 1-2 are the output of accumulator battery set single battery voltage measurement commutation circuit, can measure single-unit battery tension in the battery pack by signal 1-1 and 1-2.7 pin of U219 connect 2 pin of U28,9 pin of U219 connect 2 pin of U27,10 pin of U219 connect 2 pin of U26,11 pin of U219 connect 2 pin of U25,12 pin of U219 connect 2 pin of U24,13 pin of U219 connect 2 pin of U23,12 pin of U219 connect 2 pin of U21,15 pin of U219 connect 2 pin of U21,7 pin of U219 connect 4 pin of U28,9 pin of U219 connect 4 pin of U27,10 pin of U219 connect 4 pin of U26,11 pin of U219 connect 4 pin of U25,12 pin of U219 connect 4 pin of U24,13 pin of U219 connect 4 pin of U23,12 pin of U219 connect 4 pin of U21,15 pin of U219 connect 4 pin of U21, the end of R22 connects power supply VCC, the other end is connected to 3 pin of U28 simultaneously, 3 pin of U27,3 pin of U26,3 pin of U25,3 pin of U24,3 pin of U23,3 pin of U22 and 3 pin of U21, the end of R25 connects power supply VCC, the other end is connected to 1 pin of U28 simultaneously, 1 pin of U27,1 pin of U26,1 pin of U25,1 pin of U24,1 pin of U23,1 pin of U22 and 1 pin of U21 are formed the optical relay control circuit.5 pin of U219 and 4 pin ground connection, 5 pin of U210 and 4 pin ground connection, one end of resistance R 23 is connected to power supply VCC, the other end is connected to 15 pin of U211 and the end of C21, the other end of C21 is connected to 14 pin of U210 and forms monostable circuit, signal 2-2,2-4,2-5,2-6,2-7,2-8,2-9,2-10 is the control signal of microcontroller, 13 pin of U211 are output pin in the same way, it is connected to 6 pin of U219 and 6 pin of U210, the control signal 2-3 of microcontroller no matter, 2-4,2-5,2-6,2-7,2-8,2-9,2-10 is in any state, the output of U219 and U210 can only be temporary transient low level, make photoelectric relay U21, U22, U23, U24, U25, U26, U27 and U28 also can only be in temporary transient conducting state, thereby when having eliminated the microcontroller abnormal work, the more piece battery tension with in the battery pack of the battery voltage measuring circuit that might occur is connected, make tested voltage surpass the scope of battery voltage measuring circuit, cause the battery voltage measuring circuit to be in the situation of long-term overload.
Photoelectric relay U21, U22, U23, U24, U25, U26, U27 and U28 adopt the AQW214 photoelectric relay of Panasonic among Fig. 2, also can adopt the similarly photoelectric relay of other type.Resistance R 21 and R24 are bleeder circuits, its resistance size is chosen according to the requirement of single-unit battery tension and battery voltage measuring circuit, to measure the single-unit battery tension be 12V, when battery voltage measuring circuit maximum input voltage is 0.5V, R21 is that 27k Ω, R24 are 1k Ω.R22 and R25 choose according to the requirement of photoelectric relay interior light emitting diodes, when photoelectric relay be AQW214, when supply voltage VCC is 5V, the working current of getting the photoelectric relay interior light emitting diodes is about 10mA, R22 and R25 are 390 Ω.U211 is 74HC221, also can selects similar integrated circuit for use, and U219 and U210 are 74HC138, also can select similar integrated circuit for use.The transient state time of the resistance of R23 and the capacity of C11 decision monostable circuit, when transient state time was 1ms, C21 was 1uF, R23 is 2k Ω.
Claims (2)
1. battery voltage measuring unit of storage battery group with accident safety function, it is characterized in that in the circuit of the voltage of measuring the accumulator battery set single accumulator with photoelectric relay, at the transient state of monostable circuit control photoelectric relay the battery voltage measuring circuit is connected with accumulator in the battery pack, the battery voltage measuring circuit is not connected with accumulator in the battery pack at the Steady-State Control photoelectric relay of monostable circuit; Consisting of of described monostable circuit: 5 pin and the 4 pin ground connection of 5 pin of the one three eight code translator 74HC138 U219 and 4 pin ground connection, the 238 code translator 74HC138 U210, one end of resistance R 23 is connected to power supply VCC, the other end is connected to 15 pin of monostable integrated circuit 74HC221U211 and an end of capacitor C 21, and the other end of capacitor C 21 is connected to 14 pin of monostable integrated circuit 74HC221 U211; 13 pin of monostable integrated circuit 74HC221 U211 are output pin in the same way, and it is connected to 6 pin of the one three eight code translator 74HC138 U219 and 6 pin of the 238 code translator 74HC138 U210.
2. according to the described a kind of battery voltage measuring unit of storage battery group of claim 1 with accident safety function, it is characterized in that in described monostable circuit, the control signal 2-3 of microcontroller no matter, 2-4,2-5,2-6,2-7,2-8,2-9,2-10 is in any state, the output of the one three eight code translator 74HC138 U219 and the 238 code translator 74HC138U210 can only be temporary transient low level, make photoelectric relay U21, U22, U23, U24, U25, U26, U27 and U28 also can only be in temporary transient conducting state, thereby when having eliminated the microcontroller abnormal work, the battery voltage measuring circuit that might occur is connected with more piece battery tension in the battery pack, make tested voltage surpass the scope of battery voltage measuring circuit, cause the battery voltage measuring circuit to be in the situation of long-term overload.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007100985554A CN101034142B (en) | 2007-04-20 | 2007-04-20 | Battery voltage measuring unit of storage battery group having accident safety function |
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| CN2007100985554A CN101034142B (en) | 2007-04-20 | 2007-04-20 | Battery voltage measuring unit of storage battery group having accident safety function |
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| CN101034142B true CN101034142B (en) | 2010-08-25 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2163453Y (en) * | 1993-05-20 | 1994-04-27 | 聂清江 | Clock timing delayed reseptacle |
| CN2278224Y (en) * | 1996-05-20 | 1998-04-08 | 伍继先 | Automatic monitoring instrument for accumulator |
| CN2411489Y (en) * | 2000-02-22 | 2000-12-20 | 刘哲明 | Logic testing probe with easyly testing frequency and duty ratio function |
| EP1610436A1 (en) * | 2004-06-09 | 2005-12-28 | Fu-I Yang | Series battery charger with separate detection of batteries |
-
2007
- 2007-04-20 CN CN2007100985554A patent/CN101034142B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2163453Y (en) * | 1993-05-20 | 1994-04-27 | 聂清江 | Clock timing delayed reseptacle |
| CN2278224Y (en) * | 1996-05-20 | 1998-04-08 | 伍继先 | Automatic monitoring instrument for accumulator |
| CN2411489Y (en) * | 2000-02-22 | 2000-12-20 | 刘哲明 | Logic testing probe with easyly testing frequency and duty ratio function |
| EP1610436A1 (en) * | 2004-06-09 | 2005-12-28 | Fu-I Yang | Series battery charger with separate detection of batteries |
Non-Patent Citations (2)
| Title |
|---|
| 古启军等.串联电池组电压测量方法的研究.电测与仪表39 437.2002,39(437),26-29. |
| 古启军等.串联电池组电压测量方法的研究.电测与仪表39 437.2002,39(437),26-29. * |
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